/*
 * Copyright (C) 2021 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.turn_layout_manager;

import ohos.global.resource.Resource;
import ohos.hiviewdfx.HiLog;
import ohos.hiviewdfx.HiLogLabel;

import java.io.ByteArrayOutputStream;
import java.io.IOException;

/**
 * 工具类
 *
 * @author:turnlayout
 * @since 2021-04-19
 */
public final class Utils {
    private static final HiLogLabel TAG = new HiLogLabel(3, 0xD001100, "Utils");

    private Utils() {
    }

    private static byte[] readResource(Resource resource) {
        final int bufferSize = 1024;
        final int ioEnd = -1;
        byte[] byteArray;
        byte[] buffer = new byte[bufferSize];
        try (ByteArrayOutputStream output = new ByteArrayOutputStream()) {
            while (true) {
                int readLen = resource.read(buffer, 0, bufferSize);
                if (readLen == ioEnd) {
                    HiLog.error(TAG, "readResource finish");
                    byteArray = output.toByteArray();
                    break;
                }
                output.write(buffer, 0, readLen);
            }
        } catch (IOException e) {
            HiLog.debug(TAG, "readResource failed " + e.getLocalizedMessage());
            return new byte[0];
        }
        HiLog.debug(TAG, "readResource len: " + byteArray.length);
        return byteArray;
    }
}